TCP/IP CP Reported error 2 : Found solution

[borg42]

An archived post has also remarked this problem:

http://www.tek-tips.com/viewthread.cfm?qid=340528

I had the error:

"Checking network protocol connections...
TCP/IP CP Reported error 2: The system cannot find the file specified"

German message is:

"Netzwerkprotokollverbindungen werden überprüft...
TCP/IP CP gemeldeter Fehler 2: Das System kann die angegebene Datei nicht finden."

After some hardware (network adapter) changes connecting with VPN from Windows (WinXP) to a server suddenly raised this error.

No help was found in the web that was solving it.
So I installed a new XP and compared the registry data of working and non working versions.
(I'm not really familar with networking at all)
I found one single change that solved the problem for me:
(I'm not sure if this is working in other cases too)

In
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Dhcp\Parameters
there are one or more REG_BINARY values witha long (GUID?) name in brackets { }

Copy one of the bracket names (not sure wich) into clipboard.
e.g. {A2F5650E-D377-4A0A-9C90-784ED1EA5A92}

Make a new Key under
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetBT\Parameters\Interfaces\

With that name and 'Tcpip_' in front of it:
e.g. "Tcpip_{A2F5650E-D377-4A0A-9C90-784ED1EA5A92}"

Perhaps a MULTI_SZ (Multi-String_Value) with the name
"NameServerList" is needed under that new key too.

Please don't ask me why this works or why that problem occurs but it works for me.
Perhaps there are easier ways.
If someone reads this who is in trouble I'm glad to could help maybe.
CU,
Borg